2 × 7 × 71 × 647

Prime Factor Structure

Factorization String 2 × 7 × 71 × 647

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 1,119,744

Proper Divisor Sum 476,626

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #643099 ← → #643121

1 2 7 14 71 142 497 647 994 1,294 4,529 9,058 45,937 91,874 321,559 643,118

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

643,118 321,559 964,678 482,339 1,447,018 723,509 2,170,528 1,085,264 542,632 271,316 135,658 67,829 203,488 101,744 50,872 25,436 12,718 6,359 19,078 9,539 28,618 14,309 42,928 21,464 10,732 5,366 2,683 8,050 4,025 12,076 6,038 3,019 9,058 4,529 13,588 6,794 3,397 10,192 5,096 2,548 1,274 637 1,912 956 478 239 718 359 1,078 539 1,618 809 2,428 1,214 607 1,822 911 2,734 1,367 4,102

Other feeder batches with open delivery windows. Each feeder keeps its own target batch.